In a laboratory, a metal ruler is often used as a probe with which to fish lost credit
cards out from under low-slung furniture, and as a guide against which to manually
draw straight lines. But by far its most common use, particularly in the laboratory
environment, is to measure one or more linear dimensions of things.
It is used in a laboratory, but is not considered a laboratory tool by most people.
the uses of laboratory wares is to measure. and experiment
uses of laboratory instrument
An english ruler uses inches and feet, and a metric ruler uses centimeters, millimeters, decimeters and meters.
metric ruler
ruler
Shortly, a laboratory is a space where scientific or technical experiments are realized.
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The customary ruler uses both inches and centimeters.
If he is at his drafting table, a ruler (or one with a number of scales)If he is at his computer, the measure tool.